<template>

  <div class="login_container">

    <div class="login_box">
      <div class="ava_box">
        <img src="../assets/logo.png" />
      </div>
      <!-- 账号 -->
      <el-form :model="loginForm" ref="loginFormRef" :rules="loginFormRules" label-width="0px" class="login_form">
        <el-form-item prop="username">
          <el-input  v-model="loginForm.username"  prefix-icon="el-icon-user-solid"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input   v-model="loginForm.password" show-password="true" prefix-icon="el-icon-lock"></el-input>
        </el-form-item>

        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login" round>登录</el-button>
          <!--      <el-button type="success" round>成功按钮</el-button> -->
          <el-button type="info" @click="resetLoginForm" round>重置</el-button>
        </el-form-item>
      </el-form>

    </div>

  </div>
</template>

<script>
  export default {
    data(){
      return{
        // 表单数据绑定
        loginForm: {
          username: 'admin',
          password: '123456'
        },
        // 检验规则
        loginFormRules: {
          username: [
            {required: true,message: '请输入用户名',trigger: 'blur'},
            { min: 3, max: 8, message: '长度在 3 到 8 个字符', trigger: 'blur' }
          ],
          password: [
              {required: true,message: '密码不能为空',trigger: 'blur'},
               { min: 6, max: 12, message: '长度在 6 到 12 个字符', trigger: 'blur' }
          ]

        }
      }
    },
    methods:{
      resetLoginForm(){
        this.$refs.loginFormRef.resetFields();
      },
      login(){
        this.$refs.loginFormRef.validate(async valid=>{
            console.log(valid);
            if(!valid) return;
             const {data: res}= await this.$http.post('login',this.loginForm);
             // console.log(res)
             if(res.meta.status!=200) return this.$message.error('登录失败')
            this.$message.success('登录成功')

            window.sessionStorage.setItem('token',res.data.token)
            // 通过编程式导航跳转后台/home
            this.$router.push('/home')

        });
      }
    }
  }
</script>
<style lang="less" scoped>

  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }

  .login_box {
    height: 300px;
    width: 450px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    // 横轴，纵轴
    transform: translate(-50%, -50%);

    .ava_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;

      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
    .btns{
      display: flex;
      justify-content: flex-end;

    }
    .login_form{
      position: absolute;
      bottom: 0px;
      width: 100%;
      padding: 0 20px;
      box-sizing: border-box;

    }
  }
</style>
